Release 11.12 ("Hergest Ridge")
Release 11.12 ("Hergest Ridge")
| Article ID: gc298 | |
| Author | Kosopov, S. et al. |
| Title | The Discovery of Two Extremely Low Luminosity Milky Way Globular Clusters |
| Journal | The Astrophysical Journal, Volume 669, Issue 1, pp. 337-342 |
| Year of publication | 2007 (on gclusters from 2012-01-27 15:57:04 ) |
| Abstract | We report the discovery of two extremely low luminosity globular clusters in the Milky Way halo. These objects were detected in the Sloan Digital Sky Survey Data Release 5 and confirmed with deeper imaging at the Calar Alto Observatory. The clusters, Koposov 1 and Koposov 2, are located at ~40-50 kpc and appear to have old stellar populations and luminosities of only MV~-1 mag. Their observed sizes of ~3 pc are well within the expected tidal limit of ~10 pc at that distance. Together with Palomar 1, AM 4, and Whiting 1, these new clusters are the lowest luminosity globular clusters orbiting the Milky Way, with Koposov 2 the most extreme... |
| Tags | Kosopov 1 , Kosopov 2 |
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